An early invention by Albert Einstein has been rebuilt by scientists at Oxford University. They are trying to develop an environmentally friendly refrigerator that runs without electricity.
We all know that modern fridges cause damage to the environment. They work by using a kind of man-made greenhouse gas called Freon (氟里昂), which is far more damaging than carbon dioxide.
Now Malcolm McCulloch, an electrical engineer at Oxford, is leading a three-year project to develop appliances that can be used in places without electricity.
His team has completed a prototype (样机) of a fridge patented in 1930 by Einstein. It used only pressurized gases to keep things cold. The design was partly used in the first refrigerators, but the technology was dropped when more efficient compressors (压缩机) became popular in the 1950s. That meant a switch to using Freon.
Einstein's idea uses butane (丁烷) and water and takes advantage of the fact that liquids boil at lower temperatures, when the air pressure around them is lower.
"If you go to the top of Mount Qomolangma, water boils at a much lower temperature than it does when you're at sea level and that's because the pressure is much lower up there," said McCulloch.At one side is the evaporator (蒸发器), a bottle that contains liquid butane. "If you introduce a new vapor above the butane, the liquid boiling temperature decreases and, as it boils off, it takes energy from the surroundings to do so," says McCulloch. "That's what makes it cold."
The gas fridges based on Einstein's design were replaced by Freon-compressor fridges partly because Einstein's design was not very efficient. But McCulloch thinks that by changing the design and replacing the types of gases used it will be possible to quadruple (翻两番) the efficiency.
However, McCulloch's fridge is still in its early stages. "It's very much a prototype," he said. "Give us another month and we'll have it working." According to the passage, an early invention by Albert Einstein _______.
| A．has been rediscovered because it costs much less and works more efficiently |
| B．is being redesigned because it could be used in places without electricity |
| C．has just been found to be energy-saving and environmentally friendly |
| D．will be fully made use of and become the fridge of the future |
Which of the following is TRUE according to the text?
| A．Freon was used in fridges long before the 1950s. |
| B．Freon is what makes current fridges big polluters. |
| C．McCulloch thinks he could improve Einstein's design by using other types of vapors. |
| D．The fridge Malcolm McCulloch and his team designed will be put into production soon. |
We can learn from the text that the prototype completed _______.
| A．changed the air pressure around it |
| B．was tested on the top of Mount Everest |
| C．increased the liquid boiling temperature |
| D．used only pressurized gases to keep things cold |
McCulloch's words in Paragraph 6 _____.
| A．serve as an explanation for the principle behind Einstein's fridge |
| B．give you the reason why Einstein's fridge was not efficient |
| C．tell you how to take advantage of low air pressure |
| D．show you how Einstein's fridge works |
The United States is a country of immigrants. It is a place where people from all over the world come to build a better life. Some immigrants bring their families. Some bring a few of their favorite things. Others come alone with nothing but determination. One thing that every immigrant brings with them is their culture.
American immigration began in 1607 with the colony (殖民地) of Jamestown. In 1620, another group of people left England to build a settlement in America. They wanted to go to a place where they could practice their religion freely. Then many more people left their homes in Europe to build a better life in America. Many also came to America from Africa. By 1770, more than two million people had moved to America. Later on, more people came to the United States than ever before.
In cities all over America, you can see different cultures that formed this country. Many things that you may think of as being “American” are actually from a foreign culture. Some of the best examples of this are the foods people eat. Pizza and spaghetti are foods that all Americans know and love. But both of them are from Italy. Baseball is an all-American sport. But the hot dogs that people eat during the game are a type of food that was brought to America by German immigrants.
Over time, pizza and hot dogs have become a part of what is considered to be American food. In the same way, different groups of people have come together to define what an American is. An American can be a person of any background. An American can be of any faith. An American can be of any skin color. They can speak English clearly. They can speak English with an accent. Each new immigrant adds something new to American culture. It will keep changing as more people come to this country.Paragraph 2 is mainly about _____.
| A．the history of American immigration |
| B．why people chose to move to America |
| C．the rapid growth of the population of America |
| D．what immigrants have brought to America |
Several foods are mentioned in the text to show _____.
| A．they have a long history in America |
| B．they are very popular with Americans |
| C．America is a country full of tasty foods |
| D．America is made up of different cultures |
The author probably agrees that American culture is _____.
| A．simple | B．strange |
| C．diverse | D．advanced |
What would be the best title for the text?
| A．Immigrants and their American dreams |
| B．America: a melting pot of cultures |
| C．America: a land of opportunity |
| D．Life in the US: culture shock |
VOLUNTEER HELP WANTED, WORKING WITH NEW EVENTS TEAM
Gants Hill, London
We are looking for a few volunteers to work with us in the creation of a new events group which is needing help to expand and may lead to part-time or full-time work. Hours are flexible, and successful candidates will be working on social media and liaising (联络) phone calls with organizations and groups. Candidates must speak excellent fluent English.
VOLUNTEER EVENTS ADMINISTRATION
Westminster, London
We would like an enthusiastic and outgoing administration volunteer for our Events Team at our London Head Office. This opportunity would suit a well-organized person with an eye for detail and good computer skills. You will support our Events by sending thank-you letters, answering the telephone, and assisting with all aspects of event organization for 2 days a week.
LOVE MUSIC? WANT EVENTS EXPERIENCE?
Notting Hill, London
Oxfam Notting Hill Takeover are looking for volunteers for our music festival on 19th October 2013. The festival takes place in 5 places in Notting Hill. This charity event will be showcasing over 30 bands and DJs and playing all forms of music. We need a team of volunteers to assist us on the day in order to make sure everybody has a good time. If you want to be a part of a great event to help us raise money for Oxfam then please come along to our open recruitment session (招聘会).
VOLUNTEERS WANTED!
Hillingdon, London
Royal Voluntary Service is a national charity which delivers services through volunteers to help older people remain active and independent in their communities. We are growing our new Dementia Support Service in Hillingdon and need help from you! You will be required to have good communication skills.If you want to work with the new events team, you should _____.
| A．be confident |
| B．work full-time |
| C．speak English very well |
| D．have enough experience |
In the Royal Voluntary Service, volunteers can _____.
| A．communicate with older people |
| B．enjoy all forms of music |
| C．answer the telephone |
| D．work part-time only |
All of the four ads were written to _____.
| A．look for some volunteers |
| B．provide some job opportunities |
| C．introduce some new information |
| D．complain about volunteers’ poor service |
Last night, on my way home I stopped because of being attracted by some hamburgers at a fast food restaurant. On my way in, a homeless man approached me and asked, “Do you have any bottles lying around?” I knew he would recycle them for a few cents, but I didn’t have any, so I said no. And again he asked, “Can you spare some change ?” I smiled, and said no again. He was very respectful; he smiled back and said, “OK, thank you.” Even though he didn’t have anything, he was still in good spirits. From the way he spoke I could tell he was smart.
Then I bought one hamburger and enjoyed my meal, but in the back of my mind I wondered whether the homeless man was hungry. After I finished my meal I decided to order another one for him. At this point I didn’t know if he was still around, but I tried anyway.
At the counter I ordered a hamburger and also a hot chocolate, because it was cold outside, and I thought it would help warm him up. They delivered me the hot chocolate first and as I waited for my hamburger, I noticed the homeless man was standing right beside me. I looked at him and smiled, “This hot chocolate is for you.” He replied like a gentleman, “Thank you so much. That’s very kind of you.”
I always believe no matter how hard up I am, there are always those who are worse off than I. When you help someone, it’s not always about money, it’s about love. The love you give today, someone might forget tomorrow. It doesn’t matter. Love anyway, because the greatest thing you can give is love.What does the underlined phrase mean according to the passage?
| A．Rich in money. | B．Short in money. |
| C．Generous. | D．Selfish. |
We can learn from the first two paragraphs that the author _____.
| A．was angry with the homeless man |
| B．was an old friend of the homeless man |
| C．decided to help the homeless man after his meal |
| D．finished his meal quickly to help the homeless man |
We can infer from the text that the homeless man was _____.
| A．old and sick | B．polite and friendly |
| C．sad and nervous | D．calm and confident |
The author wants to tell us that _____.
| A．love cannot be forced |
| B．money cannot buy everything |
| C．there is always someone that we can help |
| D．we shouldn’t forget those who once helped us |
Raeann Sleith began making bracelets (手链) when she was six. Family and friends loved her designs and asked for more. When admirers suggested that Raeann sell her bracelets, she realized she wanted to do just that — and donate the money to help kids with special needs, like her brother Derek.
Raeann’s older brother, Derek, has cri du chat syndrome. Children with cri du chat usually have problems understanding ideas and might have a hard time learning to talk. Many also have weak muscles that can cause problems with walking or using their fingers to pick things up. The term cri du chat means “cry of the cat” in French. Babies with cri du chat often have a high-pitched cry that sounds like that of a little cat.
Over the years, Derek’s teachers helped him learn sign language and gestures. They also taught him skills such as recognizing letters, cutting with scissors, and understanding basic math. Raeann wanted to donate money to Derek’s school. “I just wanted to help my brother,” she says, “and the people who help him.”
At first, Raeann focused on creating jewelry that would raise awareness for cri du chat. But people started requesting bracelets to wear as a symbol of support and awareness for a variety of other diseases and disorders. To create those symbols, Raeann researched the color most often associated with raising awareness for the disease or disorder, such as pink for breast cancer or orange for leukemia.
In the end, it turned out to be a great idea. In only a few years, Raeann has donated more than $30,000 to local charities. Raeann’s mom says that working on the bracelets has developed the generosity and kindness that already existed in her daughter. Raeann plans to keep making bracelets and raising dollars for charities. “I just want to keep going on with it,” she says, “to help my brother more.”Paragraph 2 is mainly about _____.
| A．the origin of the term cri du chat |
| B．the research on cri du chat syndrome |
| C．the treatment for cri du chat syndrome |
| D．the characteristics of cri du chat syndrome |
The bracelets Raeann Sleith has made _____.
| A．are decorated with colorful jewels |
| B．represent different kinds of diseases |
| C．are very popular all over the world |
| D．add up to more than 30,000 |
Which of the following can best describe Raeann Sleith?
| A．Caring and generous. | B．Honest and responsible. |
| C．Polite and determined. | D．Creative and humorous. |
The main purpose of the text is to _____.
| A．tell us the story of a loving girl |
| B．show us how to make bracelets |
| C．introduce a kind of rare disease |
| D．ask us to donate to local charities |
It is widely known that any English conversation begins with The Weather. Such a fixation with the weather finds expression in Dr.Johnson’s famous comment that “When two English meet, their first talk is of weather.” Though Johnson’s observation is as accurate now as it was over two hundred years ago, most commentators fail to come up with a convincing explanation for this English weather-speak.
Bill Bryson, for example, concludes that, as the English weather is not at all exciting, the obsession with it can hardly be understood. He argues that “To an outsider, the most striking thing about the English weather is that there is not very much of it.” Simply, the reason is that the unusual and unpredictable weather is almost unknown in the British Isles.
Jeremy Paxman, however, disagrees with Bryson, arguing that the English weather is by nature attractive. Bryson is wrong, he says, because the English preference for the weather has nothing to do with the natural phenomena.” The interest is less in the phenomena themselves, but in uncertainty.” According to him, the weather in England is very changeable and uncertain and it attracts the English as well as the outsider.
Bryson and Paxman stand for common misconceptions about the weather-speak among the English. Both commentators, somehow, are missing the point. The English weather conversation is not really about the weather at all. English weather-speak is a system of signs, which is developed to help the speakers overcome the natural reserve and actually talk to each other. Everyone knows conversations starting with weather-speak are not requests for weather data. Rather, they are routine greetings, conversation starters or the blank “fillers”, In other words, English weather-speak is a means of social bonding.The author mentions Dr.Johnson’s comment to show that________.
| A．most commentators agree with Dr.Johnson |
| B．Dr.Johnson is famous for his weather observation |
| C．the comment was accurate two hundred years ago |
| D．English conversations usually start with the weather |
What does the underlined word “obsession” most probably refer to?
| A．An emotional state |
| B．An unknown phenomenon. |
| C．A historical concept. |
| D．A social trend. |
According to the passage, Jeremy Paxman believes that________.
| A．Bill Bryson has little knowledge of the weather |
| B．English people talk about the weather for its uncertainty |
| C．the English weather attracts people to the British Isles |
| D．there is nothing special about the English weather |
What is the author’s main purpose of writing the passage?
| A．To convince people that the English weather is changeable. |
| B．To analyze misconceptions about the English weather. |
| C．To find fault with both Bill Bryson and Jeremy Paxman. |
| D．To explain what English weather-speak is about. |